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/* Save current context.
Copyright (C) 2012-2021 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <sysdep.h>
#include "ucontext_i.h"
ENTRY(__getcontext)
/* Load address of the context data structure. */
move.l 4(%sp), %a0
/* Save the preserved registers and the return address. */
movem.l %d2-%d7, oGREGS+2*4(%a0)
movem.l %a2-%a6, oGREGS+10*4(%a0)
lea 4(%sp), %a1
move.l %a1, oSP(%a0)
move.l (%sp), oPC(%a0)
fmovem.l %fpsr/%fpcr/%fpiar, oFPREGS(%a0)
fmovem.x %fp2-%fp7, oFP2(%a0)
cfi_def_cfa (%a0, 0)
cfi_offset (%d2, oGREGS+2*4)
cfi_offset (%d3, oGREGS+3*4)
cfi_offset (%pc, oPC)
/* Save the current signal mask. */
lea oSIGMASK(%a0), %a1
move.l %a1, %d3
clr.l %d2
move.l #SIG_SETMASK, %d1
move.l #__NR_sigprocmask, %d0
trap #0
/* Restore registers. */
move.l oGREGS+2*4(%a0), %d2
cfi_restore (%d2)
move.l oGREGS+3*4(%a0), %d3
cfi_restore (%d3)
cfi_def_cfa (%sp, 4)
cfi_offset (%pc, -4)
cmp.l #-4095, %d0 /* Check %d0 for error. */
jcc SYSCALL_ERROR_LABEL /* Jump to error handler. */
0: /* All done, return 0 for success. */
clr.l %d0
rts
PSEUDO_END(__getcontext)
weak_alias (__getcontext, getcontext)
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